Build a bamboo battery pack with stackable JuiceCan

Rainbow bright: JuiceCans could also become body massagers and speakers.
Indiegogo

If you've been hit by a natural disaster recently, you know you can't put too high a price on mobile power supplies.

If your phone is dead and the grid is unreliable, JuiceCans are one way to keep communicating with loved ones.

This Indiegogo fundraising project centers on a stackable USB power pack called a JuiceCan. Add more packs to form a JuiceCane and you get more power.

Designed to look like segments of a bamboo tree, and available in rainbow colors, each JuiceCan can carry a charge of 7800 milliampere-hour (mAh), enough to charge an iPhone 5 three times or an iPad twice, according to maker AMP Tech.